if there are different underline styles in the selection the item-state in the 'rOldSet' will be invalid. In this case changing the underline style will be allowed if a style is selected in the listbox.

if there are different underline styles in the selection the item-state in the 'rOldSet' will be invalid. In this case changing the underline style will be allowed if a style is selected in the listbox.

if there are different strikeout styles in the selection the item-state in the 'rOldSet' will be invalid. In this case changing the strikeout style will be allowed if a style is selected in the listbox.

if there are different effect styles in the selection the item-state in the 'rOldSet' will be invalid. In this case changing the effect style will be allowed if a style is selected in the listbox.